What is the difference between formal and informal and casual

By A Mystery Man Writer

What is formal wear? - Quora

What is the difference between formal trouser and casual trouser? - Quora

What is casual formal? - Quora

What is the difference between a casual suit and a formal suit? - Quora

What clothes can be called formal/casual? - Quora

How to tell if something is formal or casual dress code - Quora

What is the definition of casual, business and formal attire? - Quora

What does the dresscode 'smart informal' mean? - Quora

What is the difference between formal trouser and casual trouser? - Quora